- Luna's relationship with her father. Especially when she's younger, she's an enthusiastic Genki Girl, and he's fully supportive of her dreams. Shifts towards Tear Jerker later on as she is ground down by setbacks and seems to take her hard-working father for granted, while he never stops working to help her, but it comes back again in the Bittersweet Ending as Luna achieves her dreams and remembers her father who helped inspire her.
- Luna finding the box of her shoes that were broken or forgotten throughout her life, fully repaired and in pristine condition along with her old NASA boots. At that moment, Luna realises that even if she gave up on herself, her father never did. This spurs her to try again until she eventually succeeds in college and becomes an Astronaut, by the end achieving her lifelong dream of going to the moon.
- After her father's death, Luna rallies and tries again, and as we see her succeeding in her studies and athletics, we also see that she's making friends among her classmates. When she gets an A on her paper, she and the boy sitting next to her share a high-five, and when another girl falls out during a run, Luna runs back to help her up, and we see all three of them walking together after they graduate.
- Luna finally standing on the moon looking up at the Earth, remembering her father and all that he did for her.
Heartwarming / One Small Step